CN207255159U - A kind of loose piece auto resilient mounting - Google Patents
A kind of loose piece auto resilient mounting Download PDFInfo
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- CN207255159U CN207255159U CN201721056123.2U CN201721056123U CN207255159U CN 207255159 U CN207255159 U CN 207255159U CN 201721056123 U CN201721056123 U CN 201721056123U CN 207255159 U CN207255159 U CN 207255159U
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- loose piece
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- 238000004880 explosion Methods 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 24
- 238000013461 design Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 6
- 238000003892 spreading Methods 0.000 claims description 6
- 230000007480 spreading Effects 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013036 cure process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The utility model provides a kind of loose piece auto resilient mounting, for loose piece to be installed in the body of mould, including：Locating piece, first locking nut, second locking nut, lead, locating slot, spring and loose piece, when explosion core mould molds, locating piece is pressurized and is moved along locating slot direction, driving loose piece reaches precalculated position on die ontology, spring is compacted, its one end is resisted against on locating slot, when explosion core mould molds, the pressure that loose piece end is subject to removes, spring automatic rebounding, locating piece is driven to drive loose piece return, the device not only has simple in structure, it is easy to operate, the advantages that strong applicability, and reduce to artificial dependence, improve the making precision of sand core, effectively increase production efficiency.
Description
Technical field
The utility model belongs to Mold Making field, more particularly to cold explosion core mould manufacturing field, and in particular to a kind of core shooting
Loose piece auto resilient mounting in mould.
Background technology
Mould is industrial underlying process equipment, is referred to as " mother of industry ", as the basic activity of national economy,
Mould is related to the industry-by-industries such as machinery, automobile, light industry, electronics, chemical industry, metallurgy, building, and application range is quite varied.At present, I
The problems such as state achieves great development in field of mould production, but also there are disparate development, and product aggregate level is relatively low.
Explosion core mould is widely used in casting industry, has obvious advantage, and the sand core dimensional accuracy produced by it is high, surface quality
Good, explosion core mould cylinder iron makes more, has the characteristics that easy processing, easily casting, production efficiency are high, loose piece uses mould more in explosion core mould
Has the shaping of steel overall processing, since the upper mold of explosion core mould can not install loose piece, therefore appearance profile is done and caused greatly by part loose piece
Cost of manufacture wastes, and cost of manufacture is high；In addition, loose piece is required for shutting down every time, installs, complicated, cumbersome, efficiency is low, greatly
Most loose pieces can only use dovetail key or magnet to position, and when playing type, loose piece and sand core are together taken out of, and loose piece is easy to fall off, cause
Damage.
In the patent document that notification number is CN206200017U, a kind of mould auto resilient mounting is disclosed, including it is upper
Material pressing core, lower material pressing core, positioning column and active positioning block, the center at the top of the lower material pressing core are equipped with boss, the upper pressure
Material core is located above boss, and the active positioning block is movably arranged on the inside of positioning column, and one end of active positioning block is positioned at fixed
Outside the column of position, which is guiding surface, and guiding surface presses to boss towards boss, and by spring, and the bottom of active positioning block is set
There is clamping inclined-plane, the clamping inclined-plane is equipped with two, is symmetrically fixed on convex with guiding surface by circular sliding slopes, the positioning column
The both sides of platform, part from upper material pressing core press against to boss move when, part along guiding surface enter clamp inclined-plane, two at this time
Clamp inclined-plane and ensure that part does not shift in punching course, arc transition is used with guiding surface due to clamping inclined-plane,
Part is not in stuck phenomenon, device have it is simple in structure, be easily worked, be convenient for disassembly and assembly, positioning stablity, production efficiency height etc.
Advantage, still, the device are primarily adapted for use in stamping die field, for predominantly only one end has zero caused by location hole
The beam piece product of part position inaccurate on mould；One kind is disclosed in the patent document that notification number is CN201701289U
The pumping block structure of mould core box, including upper die and lower die, and loose piece connecting rod, are equipped with loose piece on loose piece connecting rod, and the two of loose piece connecting rod
Rocking bar and release link are equipped with the position at end, rocking bar is rotatable, and lower die is equipped with pilot hole, and release link is upper and lower in pilot hole
Mobile, one end of rocking bar is contacted with loose piece connecting rod, and the lower end in contact of the other end and release link, the upper end of release link reaches pilot hole
Outside, it is equipped with resetting spring between lower die and loose piece connecting rod, during molding, upper mold pushes, and two release links are moved down at the same time by pressure, reset
Bar promotes two rocking bars to swing, and synchronous to promote loose piece connecting rod to move up, resetting spring is compacted, and loose piece is inserted into the jack of lower die
It is interior, and after upper mold moves up, loose piece connecting rod is down pushed away under the action of resetting spring, thus can be by release link by rocking bar
Up push away at the same time, can effectively avoid the stuck phenomenon of loose piece, still, the structure of the device is complex, loose piece easily occurs
The problems such as positioning is not accurate.
Therefore, a kind of simple in structure, easy to operate, accurate positioning how is designed, and loose piece can be directly anchored to mould
Auto resilient mounting on tool becomes the technical problem of this area urgent need to resolve.
Utility model content
The utility model in view of the deficiencies of the prior art, designs and develops a kind of loose piece auto resilient mounting, Neng Gouzhi
Connect and be fixed on mould, not only there is simple in structure, easy to operate, accurate positioning, strong applicability, but also reduce pair
Artificial dependence, improves the making precision of sand core, effectively increases production efficiency.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of loose piece auto resilient mounting, embodiment according to the present utility model, the loose piece auto resilient mounting include：It is fixed
Position block, the first locking nut, the second locking nut, lead, locating slot, spring and loose piece, wherein：The locating piece passes through
The lead is connected with the loose piece, and the loose piece is steel material, and the locating piece is located at the positioning set on explosion core mould
In groove, the locating piece is pressurized and is moved along the locating slot when the die is closed, drives the loose piece to reach precalculated position, and described first
Locking nut, the second locking nut are arranged on the both ends of the lead, and the spring is set on the lead, its one end
Contacted with the locating piece, the other end is resisted against the stage portion of the locating slot, and for molding when drives the locating piece to drive
The loose piece return.
Embodiment according to the present utility model, the loose piece are steel material, its structure according in explosion core mould during coremaking it is required
Model structure determine.
Embodiment according to the present utility model, the locating piece are convex structure, thereon the local end of end face and explosion core mould
Face is parallel.
Embodiment according to the present utility model, the structure of the locating slot and the locating piece and lead that extend inside it
Structure be correspondingly arranged, including locating piece holding part, lead holding part, the middle part of the lead holding part are equipped with against institute
State the stage portion of spring.
Embodiment according to the present utility model, the locating slot are designed according to loose piece spreading direction, ensure that loose piece is taking
It can be moved when going out along fixed direction.
Embodiment according to the present utility model, the lead are circular columns, its middle part is the body for being arranged the spring
Portion, for the spring to be set in the lead, the body both ends are respectively provided with locating piece and work
The threaded portion that block is fixedly connected, and the diameter of the body is more than threaded portion.
Embodiment according to the present utility model, first locking nut, the second locking nut are arranged on the threaded portion
On, for fastening the connection of lead and locating piece and loose piece.
Embodiment according to the present utility model, loose piece is determined according to the weight of the upper mold of explosion core mould and lower die, structure
Structure and material, to ensure integrally-built intensity and stability.
Embodiment according to the present utility model, the size of loose piece is with the minimum principle of volume.
The beneficial effects of the utility model are：
The loose piece auto resilient mounting of the utility model solves loose piece and can not be installed on die ontology and difficult to install
The problem of, not only there is simple in structure, easy to operate, accurate positioning, strong applicability, but also reduce to it is artificial according to
Lai Xing, improves the making precision of sand core, effectively increases production efficiency, greatly expand the use scope of core shooting mould, be
The exploitation of new markets provides technical support.
In addition to objects, features and advantages described above, the utility model also has other purposes, feature and excellent
Point.Below with reference to figure, the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the utility model loose piece auto resilient mounting mould-matching structure schematic diagram.
Fig. 2 is the utility model loose piece auto resilient mounting assembling schematic diagram.
Marginal data
1st, explosion core mould is local；2nd, material living；3rd, locating slot；4th, locating piece；5th, the first locking nut；6th, lead；7th, spring；
8th, the second locking nut；9th, loose piece.
Embodiment
In order to enable those skilled in the art to better understand the technical solutions of the present invention, with reference to specific embodiment
The utility model is described in further detail.The embodiments described below is exemplary, and is only used for explaining that this practicality is new
Type, and it is not intended that limitation to the utility model.Particular technique or condition are not specified in embodiment, according in the art
The described technology of document or condition or carried out according to product description.
One side according to the present utility model, the utility model provide a kind of loose piece auto resilient mounting, for inciting somebody to action
Loose piece is installed on the body of mould, and when explosion core mould molds, locating piece is subject to a downward pressure, and spring is compacted, living
Block is moved down along locating slot direction, and driving loose piece is moved to precalculated position on die ontology, when explosion core mould molds, loose piece end
The pressure that is subject to removes, and spring is sprung back upwards automatically, and driving locating piece drives loose piece return, Fig. 1 for the utility model loose piece from
Dynamic resilient mounting mould-matching structure schematic diagram, as shown in Figure 1, when explosion core mould molds, locating piece is subject to a downward pressure, bullet
Spring is compacted, and loose piece is moved down along locating slot direction, and driving loose piece is moved to precalculated position on die ontology, explosion core mould die sinking
When, the pressure that loose piece end is subject to removes, and spring is sprung back upwards automatically, and driving locating piece drives loose piece return, according to this practicality
New embodiment, the loose piece auto resilient mounting include：Loose piece 9, locating piece 4, locating slot 3, lead 6, spring 7, first
Locking nut 5, the second locking nut 6, wherein：The locating piece 4 is connected by the lead 6 with the loose piece 9, described
Loose piece 9 be steel material, its structure is determined according to model structure required during coremaking in explosion core mould, and the locating piece 4 is located at
In the locating slot 3 set on explosion core mould, the locating piece 4 is pressurized when the die is closed moves along the locating slot 3, drives the loose piece
9 reach precalculated position, and first locking nut 5, the second locking nut 8 are arranged on the both ends of the lead 6, the spring
7 are set on the lead 6, and during molding, its one end is contacted with the locating piece 4, and the other end is resisted against the locating slot 3
Stage portion, for molding when, drive the locating piece 4 to drive 9 return of loose piece.
Embodiment according to the present utility model, the structure of the loose piece are not particularly limited, it is only necessary to meet actual production
In required model structure, in some embodiments of the utility model, the structure of the loose piece is according in explosion core mould
Required model structure determines during coremaking.
Embodiment according to the present utility model, the material of the loose piece are not particularly limited, generally according to core shooting mould body
Material determine that in some embodiments of the utility model, its material of loose piece is Q235 steel, and is taken at hardening
Reason.
Embodiment according to the present utility model, the locating piece which is provided with one with one end that the lead is connected
Circular through hole, and the screw thread in its through hole is consistent with the screw thread of lead threaded portion one end, for loose piece and lead to be fixed
Connection.
Embodiment according to the present utility model, the structure of the locating piece is not particularly limited, in the utility model
In some embodiments, the locating piece is convex structure, and end face is parallel with the partial end-face of explosion core mould thereon, during molding, this
End face is subject to a downward pressure, and the interposition that wherein there are the end face of rectangular parallelepiped structure in both sides is equipped with circular through hole, and logical
Have in hole with the matched screw thread in the threaded portion of the lead other end, for locating piece to be fixedly connected with lead.
Embodiment according to the present utility model, the shape of the locating slot is not particularly limited, according to the present utility model
Specific embodiment, the structure of the locating slot are correspondingly arranged with the locating piece and the structure of lead extended inside it, including
Locating piece holding part, lead holding part, the middle part of the lead holding part is equipped with the stage portion against the spring, described
Its height of the holding part of locating piece is more than the height of the locating piece, as shown in Figure 1, the locating piece is pressurized along institute when the die is closed
Locating slot movement is stated, at this time, the bottom of locating piece is bonded with locating piece holding part in locating slot, and spring is compressed, and is resisted against
The stage portion of the lead holding part, during die sinking, the pressure that the locating piece is subject to eliminates, the spring automatic rebounding,
The driving locating piece drives the loose piece return.
Embodiment according to the present utility model, the locating slot are designed according to loose piece spreading direction, ensure that loose piece is taking
It can be moved when going out along fixed direction, specific embodiment according to the present utility model, spreading direction is that loose piece takes in sand mold
The direction moved when going out.
Embodiment according to the present utility model, the lead are circular columns, its middle part is the body for being arranged the spring
Portion, for the spring to be set in the lead, the body both ends are respectively provided with locating piece and work
The threaded portion that block is fixedly connected, and the diameter of the body is more than threaded portion, for by the locating piece and the work
Block is fixedly connected with the lead, and one end of threaded portion is consistent with the screw thread in the locating piece, another point with it is described
Loose piece in screw thread it is consistent.
Embodiment according to the present utility model, first locking nut, the second locking nut are arranged on the threaded portion
On, for fastening the connection of lead and locating piece and loose piece, wherein, first locking nut and the second locking screw mother stock
Not with the thread fitting at lead threaded portion both ends.Specific embodiment according to the present utility model, first locking nut with
The locating piece is tightened be fixedly connected after, first locking nut is tightened on one end of lead threaded portion, and its
One end is resisted against on locating piece, and to fasten the connection of lead and locating piece, second locking nut is twisted with the loose piece
After fastening connection, second locking nut is tightened on the other end of lead threaded portion, and its one end is resisted against
On loose piece, to fasten the connection of lead and loose piece.
Other side according to the present utility model, the utility model provide a kind of design of loose piece auto resilient mounting
Method.It is specific as follows：
First, loose piece model is designed：Loose piece is cut according to the model position of falling ending, according to model required during coremaking in explosion core mould
Structure designs the shape of loose piece, size.
In the embodiment of the utility model, the position for influencing sand mold type is the model position of falling ending, and ending point is done
Into loose piece, the size of design loose piece is additionally needed, the position of falling ending is bigger, and loose piece is bigger, on the contrary then smaller.
In the embodiment of the utility model, when designing loose piece, the size of loose piece is with the minimum principle of volume.
2nd, loose piece is processed：Loose piece model structure determination post-processing loose piece.
In the embodiment of the utility model, loose piece is processed using Q235 steel, and do cure process.
Meanwhile when loose piece designs, the knot of loose piece can be determined according to the weight of the upper mold of explosion core mould and lower die, structure
Structure and material, to ensure integrally-built intensity and stability.
3rd, the miscellaneous part of loose piece auto resilient mounting is designed：Locating piece, the first locking nut, lead, spring,
Two locking nuts.
Embodiment according to the present utility model, by locating piece, lead, loose piece, spring, the first locking nut, the second lock
What tight nut all parts were combined into is collectively referred to as material living.
4th, Design Orientation groove：After loose piece determines, the size according to the direction of loose piece spreading for direction vector and device feature
Carry out Design Orientation groove.
In the embodiment of the utility model, loose piece locating slot is designed using the spreading direction of loose piece as direction vector, it is living
Material removes the direction that material direction just refers to move when material living takes out in sand mold, in order to allow material living to be moved by this direction, so
The locating slot along this direction feeding must be designed, ensures that material living can be moved when taking out along fixed direction.
5th, it is loaded：Fig. 2 is the utility model loose piece auto resilient mounting assembling schematic diagram, as shown in Fig. 2, will be each
A component is assembled, and by after the assembling all parts of loose piece auto resilient mounting, is loaded into locating slot.
Inventor has found that, according to the device of the utility model embodiment, which, which is mainly used in, penetrates
Core field, solves the problems, such as that loose piece can not be installed and difficult to install on die ontology, not only with simple in structure, operation
The advantages that convenience, accurate positioning, strong applicability, and the making precision for artificial dependence, improving sand core is reduced, have
Effect improves production efficiency, greatly expands the use scope of core shooting mould, technical support is provided for the exploitation of new markets.
In the description of the utility model, it is to be understood that term " first ", " second " are only used for description purpose, and
It is not intended that instruction or hint relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, define
One or more this feature can be expressed or be implicitly included to the feature of " first ", " second ".
In the utility model, unless otherwise clearly defined and limited, term " assembling ", " being loaded ", " connection ", " Gu
It is fixed " etc. term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be
Mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be two
The interaction relationship of connection or two elements inside element.For the ordinary skill in the art, can basis
Concrete condition understands concrete meaning of the above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, fisrt feature is "above" or "below" second feature
Can be that the first and second features directly contact, or the first and second features pass through intermediary mediate contact.Moreover, first is special
Sign second feature " on ", " top " and " above " can be fisrt feature directly over second feature or oblique upper, or only
Represent that fisrt feature level height is higher than second feature.Fisrt feature second feature " under ", " lower section " and " below " can be with
Be fisrt feature immediately below second feature or obliquely downward, or be merely representative of fisrt feature level height and be less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term
Identical embodiment or example need not be directed to by stating.Moreover, particular features, structures, materials, or characteristics described can be
Combined in an appropriate manner in any one or more embodiments or example.In addition, without conflicting with each other, this area
Technical staff can by the different embodiments or example described in this specification and different embodiments or exemplary feature into
Row combines and combination.
Although the embodiment of the utility model has been shown and described above, it is to be understood that above-described embodiment is
Exemplary, it is impossible to the limitation to the utility model is interpreted as, those of ordinary skill in the art are in the scope of the utility model
It is interior above-described embodiment to be changed, changed, replaced and modification, meanwhile, for those of ordinary skill in the art, foundation
The thought of the application, in specific embodiments and applications there will be changes.
Claims (9)
- A kind of 1. loose piece auto resilient mounting, it is characterised in that including：Locating piece, the first locking nut, the second locking nut, Lead, locating slot, spring and loose piece, wherein：The locating piece is connected by the lead with the loose piece；The locating piece is located in the locating slot set on explosion core mould, and the locating piece is pressurized when the die is closed moves along the locating slot It is dynamic, drive the loose piece to reach precalculated position；First locking nut, the second locking nut are arranged on the both ends of the lead；The spring is set on the lead, and its one end is contacted with the locating piece, and the other end is resisted against the locating slot Stage portion, for molding when drives the locating piece to drive the loose piece return.
- 2. loose piece auto resilient mounting according to claim 1, it is characterised in that the loose piece is steel material, its structure Determined according to model structure required during coremaking in explosion core mould.
- 3. loose piece auto resilient mounting according to claim 1, it is characterised in that the locating piece is convex structure, its Upper surface is parallel with explosion core mould end face.
- 4. loose piece auto resilient mounting according to claim 1, it is characterised in that the structure of the locating slot with it The locating piece of portion's extension and the structure of lead are correspondingly arranged, including locating piece holding part, lead holding part, the lead The middle part of holding part is equipped with the stage portion against the spring.
- 5. loose piece auto resilient mounting according to claim 4, it is characterised in that the locating slot is according to loose piece spreading Design in direction.
- 6. loose piece auto resilient mounting according to claim 1, it is characterised in that the lead is circular columns, wherein Portion is the body for being arranged the spring, and the body both ends are respectively provided with the spiral shell being fixedly connected with locating piece with loose piece Line portion, the diameter of the body are more than threaded portion.
- 7. loose piece auto resilient mounting according to claim 6, it is characterised in that first locking nut, the second lock Tight nut is arranged on the threaded portion, for fastening the connection of lead and locating piece and loose piece.
- 8. loose piece auto resilient mounting according to claim 1, it is characterised in that according to the upper mold of explosion core mould and lower die Weight, structure determine the structure of loose piece and material, to ensure integrally-built intensity and stability.
- 9. loose piece auto resilient mounting according to claim 1, it is characterised in that the size of the loose piece is minimum with volume For principle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721056123.2U CN207255159U (en) | 2017-08-22 | 2017-08-22 | A kind of loose piece auto resilient mounting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721056123.2U CN207255159U (en) | 2017-08-22 | 2017-08-22 | A kind of loose piece auto resilient mounting |
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| Publication Number | Publication Date |
|---|---|
| CN207255159U true CN207255159U (en) | 2018-04-20 |
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| CN201721056123.2U Active CN207255159U (en) | 2017-08-22 | 2017-08-22 | A kind of loose piece auto resilient mounting |
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| CN (1) | CN207255159U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363220A (en) * | 2017-08-22 | 2017-11-21 | 宁夏共享模具有限公司 | A kind of loose piece auto resilient mounting |
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2017
- 2017-08-22 CN CN201721056123.2U patent/CN207255159U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107363220A (en) * | 2017-08-22 | 2017-11-21 | 宁夏共享模具有限公司 | A kind of loose piece auto resilient mounting |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 750021 the Ningxia Hui Autonomous Region Yinchuan economic and Technological Development Zone ningshuo South Street No. 298 Patentee after: KOCEL INTELLIGENT EQUIPMENT Co.,Ltd. Address before: 750021 Yinchuan, the Ningxia Hui Autonomous Region Xixia District ningshuo South Street No. 298 Patentee before: NINGXIA KOCEL PATTERN Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20241008 Address after: 750021 550 Beijing West Road, Xixia District, Yinchuan, the Ningxia Hui Autonomous Region Patentee after: KOCEL MACHINERY Ltd. Country or region after: China Address before: 750021 the Ningxia Hui Autonomous Region Yinchuan economic and Technological Development Zone ningshuo South Street No. 298 Patentee before: KOCEL INTELLIGENT EQUIPMENT Co.,Ltd. Country or region before: China |